April ultramarathons in Kansas, United States

Four-loop course linking Horsethief Canyon, Prairie, Alum Creek, and Big Bluff with varied canyons, prairies, creeks, and bluff scenery

Dirt road loops through the Flint Hills near Manhattan, Kansas, featuring over 1,500 feet of elevation change per loop and multiple course aid stations.

Double out-and-back course on the Elk River Hiking Trail with single-track, rocky terrain, limestone bluffs, rock formations, and scenic vistas

Certified paved loop in a shaded private park; a controlled, repetitive format for 50K to 200 miles with on-site lodging and heated showers.

Demanding singletrack loops on the Switchgrass Mountain Bike Trail beside Wilson Lake, with a short pavement start and central hub basecamp.

Historic Flint Hills Trail route through reclaimed railway landscape, scenic views, and natural prairie surroundings south of Kansas City

Paved out-and-back laps on Ogg Road with 200 feet of climb per 1.1-mile loop from riverside bridge to summit parking lot in Kansas City